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A.3 RS-232 Standard Serial Port 1 2 3 4 5 6 7 8 9 Table A.3: RS-232 Serial Port Pin Assignments Pin Pin Name 1 DCD 2 RxD 3 TxD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI A.4 Power Connector (PWR) Table A.4: Power connector pin assignments Pin 1 V+ (24VDC) 2 V- UNO-2272G User Manual 18
